HXM 24 Steel

HXM 24 is closely related to the widely used P20+Ni / DIN 1.2738 / AISI P20+Ni tool steel, but they do have some differences:

HXM 24 Steel  is with High Hardness 360-400 BHN and increase alloy elements to get extra life and outstanding polishing. Both HXM 24 and P20+Ni steels contain similar base elements such as carbon, chromium, manganese, and molybdenum. However, HXM 24 may have specific additives or adjusted compositions to enhance certain properties like hardness or toughness

P20+Ni is supplied in a pre-hardened condition with a hardness range of around 280-320 HB (BHN). It can be nitrided or further surface-hardened after machining. HXM 24 is typically harder in its pre-hardened state, with the ability to reach higher hardness levels without losing machinability, making it more suitable for applications where greater hardness is essential.

P20+Ni (DIN 1.2738) is often used for large plastic molds, die casting dies, and base plates. HXM 24 is used where high hardness and wear resistance are necessary in addition to toughness, making it more versatile for tooling that experiences high wear.

In summary, while both HXM 24 and P20+Ni steels are tool steels with overlapping applications, HXM 24 offers enhanced hardness and wear resistance compared to P20+Ni.

Here is a detailed overview of its properties:

1. Chemical Composition:
The exact composition may vary slightly based on the manufacturer, but typically it contains:

• Carbon (C): 0.35 – 0.45%
• Chromium (Cr): 1.8 – 2.0%
• Manganese (Mn): 0.6 – 1.0%
• Molybdenum (Mo): 0.3 – 0.5%
• Nickel (Ni): 0.9 – 1.2%
• Silicon (Si): 0.2 – 0.4%
• Sulfur (S) and Phosphorus (P): Typically low or controlled, as excessive amounts can lead to brittleness.

2. Mechanical Properties:

• Hardness: Typically delivered in a pre-hardened state with hardness ranging from 310-360 HB (Brinell hardness). It can be heat-treated to achieve even higher hardness levels, up to 38-42 HRC.
• Tensile Strength: ~ 1000 – 1200 MPa in the pre-hardened condition.
• Yield Strength: ~ 850 – 1000 MPa, depending on the tempering process.
• Impact Toughness: Exhibits good impact toughness, making it suitable for tooling and die applications that endure shock loading.

• Annealing: HXM 24 can be annealed by heating to around 710-740°C, followed by slow cooling in the furnace to reduce hardness and improve machinability if needed.
•  Hardening: The steel is generally delivered in a pre-hardened condition, but for specific applications, it can be hardened by heating it to 870-900°C, followed by air or oil quenching.
• Tempering: After hardening, tempering is usually performed at around 500-600°C to adjust the hardness and toughness according to the desired application. Tempering helps relieve internal stresses and improves the toughness without significantly lowering hardness.

HXM 24 steel is ideal for high-performance applications where wear resistance, toughness, and machinability are critical. Its properties make it suitable for demanding industrial tooling, molding, and die-casting environments.

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Mode of Supply

Virat Special Steels is the largest stockiest and supplier of HXM 24 Steel in flat, square and round bar. We provide steel in all sizes as your requirements. HXM 24 Steel is available in flat, square and round shape. Consult our team who will assist you for HXM 24 Steel query.